Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6823113431e7af8…

MALICIOUS

PDF

50.2 KB Created: 2020-09-16 18:48:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9fc4664d900fb2f00f620e4cff4e0ec4 SHA-1: 3553f9bfd3102f0aa071cfad5bee9a51b0220cf2 SHA-256: f6823113431e7af85fb52d4a6325bb7c62fbd73f2bebb451a565bda1683d1af5
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains embedded links, one of which, 'https://ttraff.me/wix?keyword=saints+row+the+third+trophy+guide', is identified as a malicious redirector. The document body and metadata suggest a lure related to game trophies, likely to trick users into clicking the malicious link. The presence of multiple PDF links hosted on Shopify, though marked as benign, indicates a link farm strategy. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.me/wix?keyword=saints+row+the+third+trophy+guide
    • https://cdn.shopify.com/s/files/1/0434/1599/4529/files/bezepavamipaborozew.pdf
    • https://cdn.shopify.com/s/files/1/0462/0268/3545/files/16637932640.pdf
    • https://cdn.shopify.com/s/files/1/0435/3510/6200/files/66841592289.pdf
    • https://cdn.shopify.com/s/files/1/0434/7107/7526/files/dorukisefit.pdf
    • https://cdn.shopify.com/s/files/1/0438/9250/6779/files/5457424527.pdf
    • https://cdn.shopify.com/s/files/1/0439/4011/8683/files/titanic_pelicula_completa_en_espa.pdf
    • https://cdn.shopify.com/s/files/1/0434/7520/6294/files/53755624271.pdf
    • https://cdn.shopify.com/s/files/1/0436/9999/4789/files/19642420155.pdf
    • https://cdn.shopify.com/s/files/1/0463/0626/3202/files/enhanced_pyp_planner_template.pdf
    • https://cdn.shopify.com/s/files/1/0435/2452/2143/files/figuge.pdf
    • https://cdn.shopify.com/s/files/1/0435/6122/2307/files/arifureta_from_commonplace_to_world_s_strongest_light_novel.pdf
    • https://53e3050f-8aa4-49f6-8e19-c09956b37533.filesusr.com/ugd/bb05c1_3a7fd6bf73c14576ad0e16e8a72e8e3b.pdf?index=true
    • https://a64a8d9b-32ab-44ac-81c7-ec60a8a065c4.filesusr.com/ugd/e948c1_c68b5e15518c4ff6b6845a18066f52eb.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008378.bin
adc820fdbeb7713237e6c0b97f9c9b3c3efc5620592183e1a4a0a249df02be19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8378 5484 bytes
font_01_sfnt_off00009630.bin
87c0398251f1c59a6a897b0fff115ec435cd17fbf4f2a8066fa1f3fe07839633		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9630 10988 bytes

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